Burr oak. As a general rule burr oaks were prairie trees due to their resistance to fires, white oaks trees of the big woods. Tend to show weak espinastic control ( I read that word in a tree book) so they tend to have a very large canopy. Very large acorn with a fringy cap that nearly covers the acorn. Acorns low in tannic acid and you can just about pet the deer that feed under them! lol